کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6603537 | 1424088 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In-situ synthesis of NiO foamed sheets on Ni foam as efficient cathode of battery-type supercapacitor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Herein we report an in-situ strategy for synthesizing NiO foamed sheet on Ni foam substrate which could achieve great improvement on the areal performance of battery-type supercapacitors. The anchored NiO foamed sheets are synthesized via a precursor growth step by hydrothermal oxidation, and followed by a pore-inducing step through heat treating. The physical characterizations indicate that this film product has a multi-level pore structure with high active surface area. As for electrode material, the anchored sheets could ensure excellent conductivity at the film/substrate interface, and the porous structure could form high free electron/ionic diffusion routes which facilitates the redox reactions for reversible energy storage. The electrochemical measurements show that the areal capacity of as-synthesized electrode could achieve 4.31-3.39â¯Câ¯cmâ2 at a wide current range of 10-200â¯mAâ¯cmâ2. The single supercapacitor device exhibits a high areal energy density of 9.84-9.45â¯Wâ¯h mâ2 at a wide power density of 100-2000 Wâ¯mâ2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 269, 10 April 2018, Pages 62-69
Journal: Electrochimica Acta - Volume 269, 10 April 2018, Pages 62-69
نویسندگان
Yuqian Fan, Zhipeng Ma, Lumeng Wang, Yue Dong, Tianhang Jiang, Zixuan Li, Liang Liu, Guangjie Shao,